How to determine the difference between colors (less\sass\...)?

Question

css

less has functions darken\lighten which change the base color making it darker/lighter by a certain % (amount).
The question is how to perform the reverse procedure and get% having 2 colors on hand?

Answer 1

There is a very good article on the topic of calculating the difference between colors: thesassway.com/advanced/how-to-programtically-go-f... And another tool that automates what this article describes: razorjam.github.io/sasscolourfunctioncalculator